CN100501683C

CN100501683C - Automatic identification method for flash memory type of product

Info

Publication number: CN100501683C
Application number: CNB2006100287539A
Authority: CN
Inventors: 刘家良
Original assignee: Shanghai Chenxing Electronics Science and Technology Co Ltd
Current assignee: Shanghai Sunrise Simcom Electronic Technology Co Ltd
Priority date: 2006-07-07
Filing date: 2006-07-07
Publication date: 2009-06-17
Anticipated expiration: 2026-07-07
Also published as: CN101101564A

Abstract

The method includes steps: first, establishing an information table interrelated to flash memory (FM); each record in the table contains model of FM device, hardware information of FM device in the model, and function set of detection device ID for FM device in the model; based on specification of FM to complete specific implementation functions for reading, erasing, programming and detection device ID etc operations for FM in the model; based on function of FM detection device ID in the said information table to compare device ID read with ID provided in the table. Advantages are: only one piece of software is needed to make flash memories in multiple models compatible by identifying flash memories automatically if flash memories in multiple models are utilized at same time so that the invention quickens schedule for developing products and makes convenience for maintaining projects.

Description

Automatic identifying method to employed flash memory type in the product

Technical field

The present invention relates to a kind of automatic identifying method to a plurality of model flash memories, particularly a kind of number identical and use the recognition methods of the flash memory of different two kinds of models to flash memory device.

Background technology

Current when the various product of research and development; be subjected to the restriction of material supply of material aspect through regular meeting; particularly the flash memory supply of material of portable terminal product use exists bigger problem; the flash memory that in a kind of product of being everlasting, needs to use multiple model; and use the flash memory of a plurality of models all can bring a lot of troubles for exploitation and later maintenance with a kind of product; therefore, the automatic identification that realizes flash memory is a job highly significant, can reduce product development and safeguard a lot of work of aspect.

For this reason, U.S. AMD (Advanced Micro Devices) company releases passes through in each storage unit of flash memory 2 information of storage, recording density is improved 1 times MirrorBit flash memory has height reliability, has cost benefit, and the MirrorBit flash memory of AMD can with existing Floating Gate (floating gate) flash memory pin compatibility, but the device number of two kinds of dissimilar same capability flash memories but is identical, and its read-write operation aspect then needs to adopt diverse ways according to different model flash memories.

Summary of the invention

Purpose of the present invention is exactly to solve the problems referred to above of running in the actual product, proposes the method for the different flash memories identifications under the method, particularly device number same case of employed flash memory type in a kind of automatic identification product.

For achieving the above object, the present invention proposes a kind of method of automatic identification flash memory, its technical scheme is:

At first create a flash memory relevant information table in the internal memory of system, each record in this form all comprises: the flash memory device model; The hardware information of this model flash memory device; The checkout equipment ID function of this model flash memory: wherein, the hardware information of flash memory device comprises: the information of the die of this model flash memory (wafer); The number of die; The ID of manufacturer of flash memory; The flash memory device sign indicating number; Flash memory expansion equipment sign indicating number 1; Expansion equipment sign indicating number 2;

Improve the read (reading) of this model flash memory again according to the instructions of flash memory, erase (wiping), program (programming), the specific implementation function of operation such as checkout equipment ID;

Carry out the ID of manufacturer, flash memory device sign indicating number, flash memory expansion equipment sign indicating number 1, expansion equipment sign indicating number 2 that flash memory checkout equipment ID function in the information table removes to read flash memory then, again respectively with this record in the ID of manufacturer, flash memory device sign indicating number, flash memory expansion equipment sign indicating number 1, the expansion equipment sign indicating number 2 of flash memory compare and then identification respectively.

Positive progressive effect of the present invention is: when the multiple flash memory type of needs uses simultaneously, discern automatically by flash memory, only software of need gets final product the flash memory of compatible multiple model, can accelerate the development progress of project, makes things convenient for project maintenance.

Description of drawings

Fig. 1 is the synoptic diagram of one embodiment of the invention.

Embodiment

At first, in the internal memory of system, set up a flash information table, joined in this table as a corresponding record with each information of flash memory that may use that use in the past, that will use, each record all comprises the flash memory device model, the checkout equipment ID function address of the hardware information of this model flash memory device and this model flash memory.Wherein the hardware information of flash memory device comprises information, the number of die, the ID of manufacturer of flash memory, flash memory device sign indicating number, flash memory expansion equipment sign indicating number 1, the expansion equipment sign indicating number 2 of the die (wafer) of this model flash memory;

Flash memory is divided into AMD and two series of Intel at present, corresponding its operational order also is divided into two series, therefore, must improve read, the erase of this model flash memory, the corresponding realization function of various operations such as program, checkout equipment ID according to the instructions of flash memory again.

Then, the operation flash memory automatic identification procedure, be exactly execution in step 1000, start-up routine 100, execution in step 1001 is from first flash memory type of flash information table, the address that execution in

step

1002,1003,1004 is obtained die according to the information of die earlier, if this flash memory has two die, the address of reading second die again; Execution in step 1005 then, the checkout equipment ID function of this model flash memory goes fetch equipment ID number in the call list: this function is that first die with flash memory is changed to reading mode, read the ID of manufacturer of this model flash memory then according to the address of die, the flash memory device sign indicating number, flash memory expansion equipment sign indicating number 1, flash memory expansion equipment sign indicating number 2, obtain the number of die, die with flash memory is changed to reading mode again, execution in

step

1006,1007,1008, if the ID of manufacturer of the flash memory that reads, the flash memory device sign indicating number, flash memory expansion equipment sign indicating number 1, the number of flash memory expansion equipment sign indicating number 2 and die all conforms to the hardware device information of this record in the information table, shows that then used flash memory is exactly this model.Otherwise,, the next model of flash information table is read comparison, up to the model that finds flash memory or till searching for complete flash information table again according to above step with regard to rebound execution in step 1002.In execution in step 1003,, just adopt the processing function of this model corresponding flash memory handling function as current flash disk operation if find the model of flash memory; If do not find, show that then the flash memory of this model does not join in the flash information table, execution in step 1008 need be added this flash memory relevant information, and perhaps the problem that is welded with of this flash memory causes reading and writing mistake.

Because the Mirrorbit in the AMD series is identical with its pin of Floating gate flash memory, and it is high that its cost performance is wanted, so most of product all will switch to the Mirrorbit flash memory from floating gate flash memory, but both read-write operations have adopted diverse ways, therefore need discern automatically these two kinds of flash memories, and the Mirrorbit of same capability and the Floating gate flash memory ID of its manufacturer, the flash memory device sign indicating number, flash memory expansion equipment sign indicating number 1, the number of flash memory expansion equipment sign indicating number 2 and die is all identical, therefore, employing is read certain different mode bit that automatic selection address obtains and is distinguished two kinds of flash memories, just can adopt corresponding operating method that flash is operated after distinguishing.

After having adopted automatic identifying method,, reduced the difficulty of product maintenance, also accelerated the research and development process of project for using the flash memory of different model will bring very big benefit in the same development project.

Claims

1, a kind of automatic identifying method to employed flash memory type in the product, its step comprises:

S ₁. at first create a flash memory relevant information table in the internal memory of system, each record in this form all comprises: the flash memory device model; The hardware information of this model flash memory device; The checkout equipment ID function of this model flash memory; Wherein, the hardware information of flash memory device comprises: the die information of this model flash memory; The number of die; The ID of manufacturer of flash memory; The flash memory device sign indicating number; Flash memory expansion equipment sign indicating number 1; Expansion equipment sign indicating number 2;

S ₂. the realization of improving this model flash memory according to the instructions of flash memory is read/the flash disk operation function and the checkout equipment ID function of erasing-programming function again;

S ₃. the flash memory checkout equipment ID function in the execution list removes to read the ID of manufacturer, flash memory device sign indicating number, flash memory expansion equipment sign indicating number 1, the expansion equipment sign indicating number 2 of flash memory then, again respectively with record in the ID of manufacturer, flash memory device sign indicating number, flash memory expansion equipment sign indicating number 1, the expansion equipment sign indicating number 2 of flash memory compare respectively, and then identification: from first flash memory type of flash information table, the address that elder generation obtains die according to the information of die, if this flash memory has two die, the address of reading second die again; The checkout equipment ID function of this model flash memory removes to read this flash memory device ID number in the call list then, this function is that first die with flash memory is changed to reading mode, read the ID of manufacturer, flash memory device sign indicating number, flash memory expansion equipment sign indicating number 1, the flash memory expansion equipment sign indicating number 2 of this model flash memory then according to the address of die, obtain the number of die, the die with flash memory is changed to reading mode again; If the number of the ID of manufacturer of the flash memory that reads, flash memory device sign indicating number, flash memory expansion equipment sign indicating number 1, flash memory expansion equipment sign indicating number 2 and die all conforms to the hardware device information of this record in the table, show that then used flash memory is exactly this model; Otherwise, the next model of flash tables is read comparison, up to the model that finds flash memory or till searching for complete table just again according to above step; If find flash memory type, just adopt the processing function of this model corresponding flash memory handling function as current flash disk operation; If do not find, show that then this model flash memory does not join in the flash memory, need add this flash memory relevant information, perhaps the problem that is welded with of this flash memory causes reading and writing mistake.

2, the automatic identifying method to employed flash memory type in the product according to claim 1, it is characterized in that, the Mirrorbit of same capability and Floating gate flash memory, the number of the ID of its manufacturer, flash memory device sign indicating number, flash memory expansion equipment sign indicating number 1, flash memory expansion equipment 2 and die is identical, also should take to read certain different mode bit that automatic selection address obtains and distinguish two kinds of flash memories, adopt corresponding operating method that flash memory is operated after distinguishing.